MH596 0MH596 CN-0MH596 280W For Dell Optiplex GX520 GX620 Power Supply L280P-01 - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.
MM720 0MM720 280w For Dell Optiplex GX745/GX755 Power Supply F280E-00 - 365PowerSupply.com - Replacement Laptop Power Adapters,Desktop Power Supply & Server Workstation PSU.
Power Supply For Dell Optiplex XE SFF 280W D499R KD98N Y738P D280ES-00 | eBay
A280P-00 Dell 280-Watts Power Supply for OptiPlex GX280 GX620